package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.entity.Employee;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class CategoryServiceImpl implements CategoryService {
    @Autowired
    CategoryMapper categoryMapper;
    @Autowired
    DishMapper dishMapper;
    @Autowired
    SetmealMapper setmealMapper;
    @Override
    public void save(CategoryDTO categoryDTO) {
        Category category=new Category();
        BeanUtils.copyProperties(categoryDTO,category);
        //设置状态
        category.setStatus(StatusConstant.ENABLE);
        //设置创造时间和修改时间
        //category.setCreateTime(LocalDateTime.now());
        //category.setUpdateTime(LocalDateTime.now());
        //设置创造人和修改人id
        //category.setCreateUser(BaseContext.getCurrentId());
        //category.setUpdateUser(BaseContext.getCurrentId());
        categoryMapper.insert(category);

    }

    @Override
    public PageResult pageQuery(CategoryPageQueryDTO categoryPageQueryDTO) {
        PageHelper.startPage(categoryPageQueryDTO.getPage(),categoryPageQueryDTO.getPageSize());
        Page<Category> pages=categoryMapper.pageQuery(categoryPageQueryDTO);
        long total= pages.getTotal();
        List  records=pages.getResult();
        return new PageResult(total,records);
    }

    @Override
    public void deleteByid(Long id) {
        //查询当前分类是否关联了菜品，如果关联了就抛出业务异常
        Integer count = dishMapper.countByCategoryId(id);
        if(count > 0){
            //当前分类下有菜品，不能删除
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }

        //查询当前分类是否关联了套餐，如果关联了就抛出业务异常
        count = setmealMapper.countByCategoryId(id);
        if(count > 0){
            //当前分类下有菜品，不能删除
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
        }
        categoryMapper.delete(id);
    }

    @Override
    public void update(CategoryDTO categoryDTO) {
        Category category=new Category();
        //把categoryDTo的属性刚给category实体
        BeanUtils.copyProperties(categoryDTO,category);
        //设置修改人和修改时间
        //category.setUpdateUser(BaseContext.getCurrentId());
        //category.setUpdateTime(LocalDateTime.now());
        categoryMapper.update(category);
    }

    @Override
    public void startOrstop(Integer status, Long id) {
        Category category=new Category();
        category.setId(id);
        category.setStatus(status);
        //category.setUpdateUser(BaseContext.getCurrentId());
        //category.setUpdateTime(LocalDateTime.now());
        categoryMapper.update(category);

    }

    @Override
    public List<Category> list(Integer type) {
        List<Category>categories=categoryMapper.list(type);
        return categories;
    }
}
